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2 results about "Vacuum grease" patented technology
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Vacuum grease is a lubricant with low volatility and is used for applications in low pressure environments. As well as a lubricant, vacuum grease is also used as a sealant for joints in vacuum systems. This is usually limited to soft vacuums, as ultra high vacuum or high temperatures may give problems with the grease outgassing. Grease is most commonly used with glass vacuum systems. All metal systems usually use knife-edge seals in soft metals instead. Where O ring seals are used, these should not be greased (in static seals at least) as it can cause the O rings to become permanently distorted when compressed.
Vacuum dynamic sealing structure of plasma gun for powder preparation
ActiveCN224283470URealize external anti-accumulation functionRealize anti-accumulation functionEngine sealsCleaning using toolsExternal PowderLubrication
The utility model belongs to the technical field of plasma rotating electrode powder manufacturing equipment, and relates to a vacuum dynamic sealing structure of a plasma gun for powder manufacturing, which comprises an external powder blocking module and a dynamic sealing module, the external powder blocking module consists of a first powder blocking plate, a powder blocking ring and an insulating powder blocking plate, the first powder blocking plate is fixed at the top of a plasma gun body to form an arc-shaped shielding surface, and the dynamic sealing module is fixed at the top of the plasma gun body. The powder retaining ring coaxially sleeves the positive electrode of the plasma gun body and forms an annular gap type powder blocking structure with the insulating powder retaining plate; the dynamic sealing module is sequentially provided with a dynamic sealing installation metal cylinder, an insulating cylinder and a sealing assembly from outside to inside in the radial direction of the plasma gun body, the insulating cylinder and the dynamic sealing installation metal cylinder form a step-shaped sealing structure, and vacuum sealing and electrical isolation are achieved between the dynamic sealing module and the external powder blocking module through bakelite and an O-shaped sealing ring. The vacuum dynamic sealing structure provided by the utility model has the advantages of powder isolation, reliable sealing, no burning loss short circuit and no need of vacuum grease auxiliary sealing lubrication.
Owner:SINO EURO MATERIALS TECH OF XIAN CO LTD
Heater optimized ball valve
A heater optimized ball valve is provided that includes one or more heat flux components. A heater optimized ball valve may be a modular ball valve including a plurality of end caps secured to a valve body frame having a ball disposed within the frame between at least two of the end caps, where the modular ball valve includes a thermally conductive grease including a mixture of a vacuum grease and a metal alloy powder, the metal alloy powder being thermally conductive to the ball, and the vacuum grease being thermally conductive to the ball. And at least one seal disposed on the top outer diameter surface of the ball and on the inner proximal facing surface of the top end cap, at least partially filling a top gap separating the two surfaces, and disposed on the bottom outer diameter surface of the ball valve and on the distal facing surface of the bottom end cap, at least partially filling a gap separating the two surfaces.
Owner:A N INC